Ballpoint pen



FIG. 1 is a perspective view of a ballpoint pen, showing my new design;

FIG. 2 is a front view of the ballpoint pen;

FIG. 3 is a top view of the ballpoint pen;

FIG. 4 is a bottom view of the ballpoint pen;

FIG. 5 is a left view of the ballpoint pen;

FIG. 6 is a right view of the ballpoint pen;

FIG. 7 is an enlarged top view of the ballpoint pen; and,

FIG. 8 is an enlarged bottom view of the ballpoint pen.

Back views are omitted because they are mirror images of the front views. Parts shown by broken lines do not constitute claimed designs. Thin lines represent surface shading to show the contours of the article only, and do not represent ornamentation or decoration. 

CLAIM The ornamental design for a ballpoint pen, as shown and described. 